JP3304147B2 - solenoid - Google Patents
solenoidInfo
- Publication number
- JP3304147B2 JP3304147B2 JP34229092A JP34229092A JP3304147B2 JP 3304147 B2 JP3304147 B2 JP 3304147B2 JP 34229092 A JP34229092 A JP 34229092A JP 34229092 A JP34229092 A JP 34229092A JP 3304147 B2 JP3304147 B2 JP 3304147B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- movable
- fixed
- iron core
- elastic body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、コイルの励磁により可
動鉄心を固定鉄心に吸引させるようにしたソレノイドに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid in which a movable core is attracted to a fixed core by exciting a coil.
【０００２】[0002]
【従来の技術】図７は従来のソレノイドの断面図を示
し、フレーム３内にコイル４が配設されており、また、
フレーム３の底部には固定鉄心２が固着されている。こ
の固定鉄心２の上面は略Ｖ字型に凹設されており、その
凹部の底部には弾性体５が配設してある。2. Description of the Related Art FIG. 7 is a sectional view of a conventional solenoid, in which a coil 4 is disposed in a frame 3, and
The fixed core 2 is fixed to the bottom of the frame 3. The upper surface of the fixed iron core 2 is recessed in a substantially V-shape, and an elastic body 5 is disposed at the bottom of the recess.
【０００３】また、可動鉄心１がコイル４及びフレーム
３内に上下動自在に配設されており、可動鉄心１の下部
は固定鉄心２の上面と対向し、下部は固定鉄心２の凹部
に吸着するように略Ｖ字型に突設してある。また、可動
鉄心１の上部はフレーム３から突出自在となっている。
ここで、可動鉄心１と固定鉄心２とは直接衝突しないよ
うに両鉄心１，２間にゴム等の弾性体５を介在させ、衝
撃音を吸収するようにしている。[0003] A movable core 1 is vertically movable within a coil 4 and a frame 3. A lower portion of the movable core 1 is opposed to an upper surface of a fixed core 2, and a lower portion is adsorbed by a concave portion of the fixed core 2. It is provided with a substantially V-shaped projection. The upper part of the movable core 1 can freely protrude from the frame 3.
Here, an elastic body 5 such as rubber is interposed between the iron cores 1 and 2 so as to prevent the movable iron core 1 and the fixed iron core 2 from directly colliding with each other so as to absorb the impact sound.
【０００４】[0004]
【発明が解決しようとする課題】かかる従来例において
は、弾性体５により消音効果はあるが、弾性体５の厚み
分の空隙が生じるので、磁気抵抗が増加し、保持（吸
着）力が低下する。高出力（短時間通電）（低デューテ
ィ比）で、しかも保持時間の長い用途では、吸着後、励
磁電流を下げて、保持を維持することがよく知られてい
るが、弾性体５が介在し、磁気抵抗が大きいため、保持
に必要な電流を連続通電に必要な電流まで下げることが
できない。In such a conventional example, the elastic member 5 has a sound deadening effect, but a void corresponding to the thickness of the elastic member 5 is formed, so that the magnetic resistance increases and the holding (adsorption) force decreases. I do. It is well known that in applications where the output is high (short-time energization) (low duty ratio) and the holding time is long, it is well known that the magnetizing current is reduced and the holding is maintained after the adsorption. Since the magnetic resistance is large, the current required for holding cannot be reduced to the current required for continuous conduction.
【０００５】つまり、連続通電に必要な電流まで下げれ
ば保持が維持できない。言い換えれば、出力アップに限
度がある。また、永久磁石を内蔵したラッチングタイプ
では、無励磁保持力が極端に低下し、保持できないとい
う問題がある。図８及び図９は他の従来例を示し、かか
る従来例では、固定鉄心２をゴム等の弾性体５を介して
フレーム３に対して変位可能とし、可動鉄心１が固定鉄
心２に吸着衝突した際の衝撃力を緩和して、衝撃音を軽
減するようにしたものである。That is, if the current is reduced to a value required for continuous energization, the holding cannot be maintained. In other words, the output is limited. Further, the latching type having a built-in permanent magnet has a problem that the non-excitation holding force is extremely reduced and cannot be held. 8 and 9 show another conventional example. In this conventional example, the fixed iron core 2 can be displaced with respect to the frame 3 via an elastic body 5 such as rubber, and the movable iron core 1 is attracted and collided with the fixed iron core 2. In this case, the impact force is reduced to reduce the impact sound.
【０００６】しかしながら、図８及び図９に示す従来例
では、可動鉄心１と固定鉄心２とが直接衝突するため、
消音効果が少ないという問題がある。本発明は、上述の
点に鑑みて提供したものであって、消音効果を向上し、
保持力の低下を防ぎ、少ない励磁電流で連続保持を可能
とすることを目的としたソレノイドを提供するものであ
る。However, in the conventional example shown in FIGS. 8 and 9, since the movable core 1 and the fixed core 2 directly collide with each other,
There is a problem that the silencing effect is small. The present invention has been made in view of the above points, and has an improved sound deadening effect.
It is an object of the present invention to provide a solenoid for preventing a decrease in holding force and enabling continuous holding with a small exciting current.
【０００７】[0007]
【課題を解決するための手段】本発明は、フレームの要
所に固着された固定鉄心と、軸方向に移動可能に配設さ
れ、上記固定鉄心と吸着する可動鉄心と、固定鉄心の外
周に軸方向に移動可能に設けられた補助固定鉄心と、コ
イルの励磁により可動鉄心が固定側の鉄心に吸着される
ときに吸着面に介在させた第１の弾性体と、この第１の
弾性体を介して可動鉄心が固定側の鉄心に吸引される時
に補助固定鉄心の可動鉄心への最終吸着位置へ進行停止
する際に補助固定鉄心の衝撃を和らげる第２の弾性体と
で構成したものである。According to the present invention, there is provided a fixed iron core fixed to a key point of a frame, a movable iron core arranged to be movable in the axial direction and adsorbed to the fixed iron core, and an outer periphery of the fixed iron core. An auxiliary fixed core provided movably in the axial direction, a first elastic body interposed on the attracting surface when the movable core is attracted to the fixed core by excitation of the coil, and the first elastic body When the movable core is attracted to the fixed-side iron core through the second fixed body, the auxiliary fixed core moves to the final suction position on the movable core and stops at the final suction position. is there.
【０００８】また、請求項２においては、第１の弾性体
を可動鉄心と固定鉄心との吸着面に配設し、第２の弾性
体を固定鉄心の可動鉄心への吸引方向とは反対方向に押
し付けるように配設し、可動鉄心の吸着最終位置で可動
鉄心と補助固定鉄心とを面吸着させたものである。さら
に、請求項３においては、第１の弾性体を可動鉄心と補
助固定鉄心との吸着面に配設し、第２の弾性体をエアー
ダンパーにて構成し、この第２の弾性体により補助固定
鉄心を可動鉄心側に付勢させ、可動鉄心の吸着最終位置
で可動鉄心と固定鉄心とを面吸着させたものである。According to a second aspect of the present invention, the first elastic member is disposed on an attraction surface between the movable core and the fixed core, and the second elastic member is arranged in a direction opposite to a direction in which the fixed core is attracted to the movable core. The movable core and the auxiliary fixed core are surface-sucked to each other at the final position where the movable core is attracted. Further, in the third aspect, the first elastic body is disposed on the suction surface between the movable iron core and the auxiliary fixed iron core, and the second elastic body is constituted by an air damper. The stationary core is urged toward the movable core side, and the movable core and the fixed core are surface-adsorbed at the final position of suction of the movable core.
【０００９】[0009]
【作用】本発明によれば、吸引動作の衝撃を弾性体で受
けるため、消音効果があり、寿命を向上できる。また、
最終的に鉄心同士が面吸着するため、保持（吸着）力の
低下を防ぐことができ、高出力（低デューティ比）タイ
プにおいても、励磁電流をダウンさせることにより、連
続保持（通電）が可能となる。更に、ラッチングタイプ
においても、無励磁保持力を低下することなく、消音効
果が得られるものである。According to the present invention, since the impact of the suction operation is received by the elastic body, there is a silencing effect and the life can be improved. Also,
Eventually, the cores are attracted to each other, so that the holding (sucking) force can be prevented from lowering. Even in the high output (low duty ratio) type, continuous holding (energization) is possible by reducing the exciting current. Becomes Further, also in the latching type, a noise reduction effect can be obtained without reducing the non-excitation holding force.
【００１０】また、請求項２においても、請求項１と同
様に、吸引動作の衝撃を弾性体で受けるため、消音効果
があり、寿命を向上できる。また、最終的に鉄心同士が
面吸着するため、保持（吸着）力の低下を防ぐことがで
き、高出力（低デューティ比）タイプにおいても、励磁
電流をダウンさせることにより、連続保持（通電）が可
能となる。更に、ラッチングタイプにおいても、無励磁
保持力を低下することなく、消音効果が得られるもので
ある。Also, in the case of the second aspect, similarly to the first aspect, the impact of the suction operation is received by the elastic body, so that there is a silencing effect and the life can be improved. In addition, since the iron cores are finally attracted to each other, the holding (adsorption) force can be prevented from lowering. Even in a high output (low duty ratio) type, the holding current can be reduced by continuously reducing the excitation current. Becomes possible. Further, also in the latching type, a noise reduction effect can be obtained without reducing the non-excitation holding force.
【００１１】更に、請求項３においては、可動鉄心の吸
引動作の衝撃を第２の弾性体及びエアーダンパーからな
る第１の弾性体で受けるため、消音効果があると共に、
可動鉄心と固定鉄心の吸着面の寿命アップとなる。ま
た、最終的に可動鉄心と固定鉄心同士が面吸着するた
め、磁気抵抗の増加がなく、保持（吸着）力の低下がな
いので、高出力（低デューティ比）タイプにおいて、励
磁電流をダウンさせることにより、連続保持（通電）が
可能となる。更に、ラッチングタイプにおいても、無励
磁保持力を低下することなく、消音効果が得られる。ま
た、ストロークエンドで可動鉄心に制動がかかるので、
被制御物への緩動作用が可能となる。また、第１の弾性
体のダンパー構造が、可動鉄心の動作に直接影響しない
ので、外部出力への影響がないものである。Further, according to the present invention, since the impact of the suction operation of the movable iron core is received by the first elastic body including the second elastic body and the air damper, the sound absorbing effect can be obtained.
The life of the suction surfaces of the movable core and the fixed core is extended. In addition, since the movable core and the fixed core are finally attracted to each other, there is no increase in magnetic resistance and no decrease in holding (adsorption) force. Therefore, in a high output (low duty ratio) type, the exciting current is reduced. This enables continuous holding (energization). Further, also in the latching type, a silencing effect can be obtained without lowering the non-excitation holding force. Also, since the movable core is braked at the stroke end,
Slow operation to the controlled object becomes possible. Further, since the damper structure of the first elastic body does not directly affect the operation of the movable iron core, there is no influence on the external output.
【００１２】[0012]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１に本実施例のソレノイドの断面図を示す。
尚、図１の左側は励磁前の状態を示し、右側は保持状態
を示している。また、図２は本実施例のソレノイドの吸
引力特性を示す図である。図１に示すように、フレーム
３、コイル４、円柱状の可動鉄心１等は従来と同様に構
成されており、円柱状の固定鉄心２はフレーム３の底部
に固着され、固定鉄心２の外周には円筒状の補助固定鉄
心６が上下動自在に配設されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sectional view of the solenoid of this embodiment.
The left side of FIG. 1 shows a state before excitation, and the right side shows a holding state. FIG. 2 is a diagram showing the attraction force characteristics of the solenoid of this embodiment. As shown in FIG. 1, a frame 3, a coil 4, a columnar movable core 1, and the like are configured in the same manner as in the related art, and a columnar fixed core 2 is fixed to the bottom of the frame 3, and an outer periphery of the fixed core 2 is provided. , A cylindrical auxiliary fixed iron core 6 is disposed to be vertically movable.
【００１３】この補助固定鉄心６の下部はフランジ９が
周設されており、このフランジ９の上面とコイル４の下
端との間にバネ定数の低いリング状のゴム等の弾性体７
が設けてある。また、可動鉄心１と固定鉄心２とが直接
衝突しないように、可動鉄心１と固定鉄心２の間にゴム
等の弾性体８を介在させている。次に、動作について説
明する。A flange 9 is provided around the lower part of the auxiliary fixed iron core 6. A ring-shaped elastic body 7 such as rubber having a low spring constant is provided between the upper surface of the flange 9 and the lower end of the coil 4.
Is provided. An elastic body 8 such as rubber is interposed between the movable core 1 and the fixed core 2 so that the movable core 1 and the fixed core 2 do not directly collide with each other. Next, the operation will be described.
【００１４】励磁前 補助固定鉄心６は、弾性体７によりＦ0 の力でフレーム
３のａ面に押しつけられている。 励磁 コイル４に電流を印加すると、可動鉄心１と固定鉄心２
の間に吸引力Ｆ2 が働き、可動鉄心１は弾性体８に衝突
するまで吸着動作を行う。なお、この位置が外部負荷側
より見たストローク０の位置である。The pre-excitation auxiliary fixed iron core 6 is pressed against the a surface of the frame 3 by an elastic body 7 with a force of F 0 . When current is applied to the exciting coil 4, the movable core 1 and the fixed core 2
During this time, the suction force F 2 acts, and the movable iron core 1 performs the suction operation until it collides with the elastic body 8. This position is the position of the stroke 0 as viewed from the external load side.
【００１５】補助固定鉄心６移動 可動鉄心１が弾性体８に衝突後、可動鉄心１と補助固定
鉄心６間の吸引力Ｆ3によりＦ3 −Ｆ0 の力で補助固定
鉄心６は可動鉄心１に衝突し、ｂ面で面吸着する（ｂ面
で保持力を出す）。なお、可動鉄心１が弾性体８に衝突
前に補助固定鉄心６が移動し、補助固定鉄心６が可動鉄
心１と衝突したとしても、他の一端がフリーであるた
め、衝撃をほとんど受けない。Movement of the auxiliary fixed core 6 After the movable core 1 collides with the elastic body 8, the auxiliary fixed iron core 6 is moved by the force of F 3 −F 0 by the suction force F 3 between the movable core 1 and the auxiliary fixed core 6. And the surface is attracted by the surface b (holding force is exerted by the surface b). Note that even if the auxiliary fixed iron core 6 moves before the movable iron core 1 collides with the elastic body 8 and the auxiliary fixed iron core 6 collides with the movable iron core 1, the other end is free and almost no impact is received.
【００１６】補助固定鉄心６と固定鉄心２の磁路は、そ
れぞれの内外周面に沿って平行であると共に、対向面積
が大きいため、補助固定鉄心６の位置による磁気抵抗の
変化は微少となり、補助固定鉄心６は容易に可動鉄心１
吸着位置まで移動可能となる。なお、磁気抵抗が変化す
れば、補助固定鉄心６と固定鉄心２間に吸引力が作用
し、移動を困難にする。The magnetic paths of the auxiliary fixed iron core 6 and the fixed iron core 2 are parallel to each other along the inner and outer peripheral surfaces and have a large opposing area. Therefore, the change in the magnetic resistance depending on the position of the auxiliary fixed iron core 6 becomes very small. The auxiliary fixed iron core 6 can easily move the movable iron core 1.
It can be moved to the suction position. If the magnetic resistance changes, an attractive force acts between the auxiliary fixed iron core 6 and the fixed iron core 2, making it difficult to move.
【００１７】保持（吸着）完了 保持時、ソレノイドの主磁束は、可動鉄心１→補助固定
鉄心６→固定鉄心２→フレーム３→可動鉄心１の経路と
なる。補助固定鉄心６と固定鉄心２は平行磁極であり、
補助固定鉄心６の位置に関係なく、ほぼ同じであるた
め、補助固定鉄心６と固定鉄心２の隙間は非常に小さく
することができる。Completion of holding (adsorption) At the time of holding, the main magnetic flux of the solenoid passes through the movable core 1 → the auxiliary fixed core 6 → the fixed core 2 → the frame 3 → the movable core 1. The auxiliary fixed iron core 6 and the fixed iron core 2 are parallel magnetic poles,
Regardless of the position of the auxiliary fixed iron core 6, the gap is substantially the same, so that the gap between the auxiliary fixed iron core 6 and the fixed iron core 2 can be made very small.
【００１８】このため、補助固定鉄心６と固定鉄心２の
磁気抵抗は微少となり、保持（吸着）力が低下すること
を防ぎ、励磁電流を連続通電可能な保持電流へ下げるこ
とができる。尚、ソレノイドの構造が従来の図７のよう
な場合、連続通電可能電流にすると、保持力が図２に示
すｇまで下がり、保持が不可能となる。しかし、本実施
例のような構造とすることで、保持力は図２に示すｈと
なり、保持が可能となるものである。For this reason, the magnetic resistance between the auxiliary fixed iron core 6 and the fixed iron core 2 becomes very small, so that the holding (adsorption) force is prevented from lowering, and the exciting current can be reduced to a holding current that allows continuous conduction. In the case where the structure of the solenoid is as shown in FIG. 7 of the related art, if a continuous energizable current is used, the holding force is reduced to g shown in FIG. 2 and the holding becomes impossible. However, by adopting the structure as in this embodiment, the holding force becomes h shown in FIG. 2, and the holding becomes possible.
【００１９】このように、本実施例では、吸引動作の衝
撃を弾性体８で受けるために、消音効果があり、寿命を
向上できる。また、最終的に可動鉄心１と補助固定鉄心
６とが面吸着する（この際、補助固定鉄心６が可動鉄心
１に衝突するが、衝突エネルギーが小さいので、無視す
ることができる。）ため、保持（吸着）力の低下を防ぐ
ことができるので、高出力（低デューティ比）タイプに
おいても、励磁電流をダウンさせることにより、連続保
持（通電）が可能となるものである。[0019] Thus, in this embodiment, in order to receive the impact of the suction operation by the elastic member 8, silencing effect there is, the life
Can be improved . Further, finally, the movable core 1 and the auxiliary fixed core 6 are surface-adsorbed (at this time, the auxiliary fixed core 6 is
Collision 1 but ignored because collision energy is small
Can be ) Therefore, it is possible to prevent a reduction in the holding (adsorbing) force, even in a high output (low duty ratio) type, by down an excitation current, in which a continuous retaining (current) becomes possible.
【００２０】更に、ラッチングタイプにおいても、無励
磁保持力を低下することなく、消音効果が得られるもの
である。 （実施例２）図３に実施例２のソレノイドの断面図を示
す。本実施例では、固定鉄心２の外周部に、その外周部
に沿って変位可能なフランジ９を有する補助固定鉄心６
を設け、補助固定鉄心６の下端とフレーム３の底部との
間に、内部に空気溜まり１２があるバネ定数の低い弾性
体１０を介在させている。Further, also in the latching type, a silencing effect can be obtained without lowering the non-excitation holding force. (Embodiment 2) FIG. 3 shows a sectional view of a solenoid of Embodiment 2. In the present embodiment, an auxiliary fixed iron core 6 having a flange 9 displaceable along the outer peripheral portion of the fixed iron core 2 is provided.
And an elastic body 10 having a low spring constant and having an air reservoir 12 therein is interposed between the lower end of the auxiliary fixed iron core 6 and the bottom of the frame 3.
【００２１】上記弾性体１０は、内部の空気溜まり１２
内にある空気は、外部の空気と細い通路でつながるよう
に弾性体１０に小さな穴（弁を設けてもよい）を穿設し
たり、固定部に溝等を設けている。また、可動鉄心１と
補助固定鉄心６が直接衝突しないように可動鉄心１と補
助固定鉄心６との間に弾性体１１を介在させている。
尚、本実施例では、弾性体１０をブロー状に形成してい
るが、内部に空気溜まり１２が設けられた形状であれ
ば、どのような形状でも良い。The elastic body 10 has an internal air reservoir 12.
A small hole (a valve may be provided) is formed in the elastic body 10 so that the air inside is connected to the outside air through a narrow passage, and a groove or the like is provided in the fixing portion. An elastic body 11 is interposed between the movable core 1 and the auxiliary fixed core 6 so that the movable core 1 and the auxiliary fixed core 6 do not directly collide with each other.
In this embodiment, the elastic body 10 is formed in a blow shape. However, any shape may be used as long as the air reservoir 12 is provided inside.
【００２２】次に、本実施例におけるソレノイドの動作
について説明する。 無励磁状態（図３の状態） 補助固定鉄心６は、バネ定数の低い弾性体１０によりＦ
0 の力でコイル４の下端面に押し付けられている。ここ
で、Ｆ0 は、弾性体１０の復原力を示している。Next, the operation of the solenoid in this embodiment will be described. Non-excitation state (state of FIG. 3) The auxiliary fixed iron core 6 is formed by an elastic body 10 having a low spring constant.
It is pressed against the lower end surface of the coil 4 with zero force. Here, F 0 indicates the stability of the elastic body 10.
【００２３】可動鉄心１と補助固定鉄心６が衝突した
場合（図４の状態） コイル４に電流を印加すると、可動鉄心１と固定鉄心
２、補助固定鉄心６間に吸引力が生じ、可動鉄心１は吸
引され、可動鉄心１は、可動鉄心１と補助固定鉄心６間
に介在された弾性体１１に衝突する。この際、弾性体１
１、補助固定鉄心６を介して衝突力は、弾性体１０及び
弾性体１１の空気溜まり１２内の空気に圧縮力を伝え
る。弾性体１０内の空気は、細い通路を通して外の空気
とつながっているが、急激な圧縮のため、瞬間的に高圧
となり、可動鉄心１が固定鉄心２に衝突する前に、可動
鉄心１に急激に制動をかける。When the movable core 1 and the auxiliary fixed core 6 collide (the state shown in FIG. 4). When a current is applied to the coil 4, an attractive force is generated between the movable core 1, the fixed core 2 and the auxiliary fixed core 6, and the movable core 1 is sucked, and the movable iron core 1 collides with an elastic body 11 interposed between the movable iron core 1 and the auxiliary fixed iron core 6. At this time, the elastic body 1
1. The impact force via the auxiliary fixed iron core 6 transmits a compressive force to the air in the air reservoir 12 of the elastic body 10 and the elastic body 11. The air in the elastic body 10 is connected to the outside air through a narrow passage. However, due to rapid compression, the pressure instantaneously becomes high, and before the movable core 1 collides with the fixed core 2, the movable core 1 suddenly Brake on
【００２４】ここで、Ｆ0 は、瞬間的に弾性体１０の復
原力＋弾性体１０内の空気圧となる。 可動鉄心１の保持状態へ（図５の状態） 上記で瞬間的に高圧となった弾性体１０内の空気は、
細い通路を通ってゆっくり外部に出るため、可動鉄心１
は徐々に固定鉄心２に近づき、最終的に可動鉄心１と固
定鉄心２が直接面吸着する（ストローク０の位置）。Here, F 0 instantaneously becomes the stability of the elastic body 10 plus the air pressure in the elastic body 10. To the holding state of the movable core 1 (the state of FIG. 5) The air in the elastic body 10 which has been instantaneously turned to a high pressure is
Movable iron core 1 to get out slowly through a narrow passage
Gradually approaches the fixed iron core 2, and finally the movable iron core 1 and the fixed iron core 2 are directly surface-adsorbed (position of the stroke 0).
【００２５】ここでは、弾性体１０内の空気が抜けるに
従い、徐々に可動鉄心１が固定鉄心２に近付く。また、
Ｆ0 は弾性体１０の復原力を示している。そして、弾性
体１０内の空気は、細い通路を通ってゆっくり抜け、大
気圧を維持する。 保持（吸着）完了 保持時、ソレノイドの主磁束は、可動鉄心１→固定鉄心
２→フレーム３→可動鉄心１と完全に閉磁路となり、保
持（吸着）力が低下することを防ぎ、励磁電流を連続通
電可能な保持電流で下げることができる。Here, as the air in the elastic body 10 escapes, the movable core 1 gradually approaches the fixed core 2. Also,
F 0 indicates the restoring force of the elastic body 10. Then, the air in the elastic body 10 slowly escapes through the narrow passage and maintains the atmospheric pressure. Completion of holding (suction) During holding, the main magnetic flux of the solenoid becomes a completely closed magnetic path from the movable core 1 → fixed core 2 → frame 3 → movable core 1, preventing the holding (suction) force from lowering and reducing the exciting current. It can be reduced by a holding current that allows continuous conduction.
【００２６】復帰動作 可動鉄心１の動作に直接関係するダンパー機構を持って
いないので、コイル４の電流を断つと、可動鉄心１は外
部復帰力により、速やかに初期位置に戻る。また、補助
固定鉄心６は弾性体１０の復原力（復原力により弾性体
１０内の空気溜まり１２は負圧となる）と、弾性体１０
内の空気溜まり１２への外部からの空気供給により、図
３の初期位置に移動し、復帰完了となる。Returning operation Since there is no damper mechanism directly related to the operation of the movable iron core 1, when the current of the coil 4 is cut off, the movable iron core 1 returns to the initial position promptly by the external returning force. In addition, the auxiliary fixed iron core 6 has a stability of the elastic body 10 (the air pool 12 in the elastic body 10 becomes negative pressure due to the stability) and the elastic body 10.
When the air is supplied from the outside to the inside air reservoir 12, the air reservoir 12 moves to the initial position in FIG. 3 and the return is completed.
【００２７】尚、図６は本実施例のソレノイドの吸引力
特性を示し、上述のように弾性体１０の空気溜まり１２
の圧力が減り、合成負荷（＝外部負荷＋弾性体１０の復
原力）＋空気圧が図６に示すＦ2 以下になると、可動鉄
心１はストローク０に近づき、空気圧の下がり具合に合
わせてストローク０まで移動する。最終的に空気圧は大
気圧となり、負荷は図６に示すｋとなる。連続通電時の
保持力ｈは、ｋより大きいので、保持可能となる。FIG. 6 shows the suction force characteristic of the solenoid of the present embodiment, and as described above, the air reservoir 12 of the elastic body 10
Reduces pressure and + pneumatic (restoring force of the = external load + elastic body 10) combined load becomes less than F 2 shown in FIG. 6, the movable iron core 1 approaches the stroke 0 stroke 0 in accordance with the edge state of air pressure Move up to. Finally, the air pressure becomes the atmospheric pressure, and the load becomes k shown in FIG. Since the holding force h during continuous energization is larger than k, it can be held.
【００２８】このように本実施例では、可動鉄心１の吸
引動作の衝撃を弾性体１１及びエアーダンパーからなる
弾性体１０で受けるため、消音効果があると共に、可動
鉄心１と固定鉄心２の吸着面の寿命アップとなる。ま
た、最終的に可動鉄心１と固定鉄心２同士が面吸着する
ため、磁気抵抗の増加がなく、保持（吸着）力の低下が
ないので、高出力（低デューティ比）タイプにおいて、
励磁電流をダウンさせることにより、連続保持（通電）
が可能となる。As described above, in this embodiment, since the impact of the suction operation of the movable core 1 is received by the elastic body 11 including the elastic body 11 and the air damper, the sound absorbing effect is provided, and the movable core 1 and the fixed core 2 are attracted to each other. The service life of the surface is extended. In addition, since the movable core 1 and the fixed core 2 are finally attracted to each other, there is no increase in magnetic resistance and no decrease in holding (adsorption) force. Therefore, in a high output (low duty ratio) type,
Continuous holding (energization) by reducing the exciting current
Becomes possible.
【００２９】更に、ラッチングタイプにおいても、無励
磁保持力を低下することなく、消音効果が得られる。ま
た、ストロークエンドで可動鉄心１に制動がかかるの
で、被制御物への緩動作用が可能となる。また、弾性体
１０のダンパー構造が、可動鉄心１の動作に直接影響し
ないので、外部出力への影響がないものである。Further, also in the latching type, a silencing effect can be obtained without lowering the non-excitation holding force. In addition, since the movable iron core 1 is braked at the stroke end, it is possible to perform a gentle operation on the controlled object. Further, since the damper structure of the elastic body 10 does not directly affect the operation of the movable iron core 1, there is no influence on the external output.
【００３０】[0030]
【発明の効果】本発明は上述のように、フレームの要所
に固着された固定鉄心と、軸方向に移動可能に配設さ
れ、上記固定鉄心と吸着する可動鉄心と、固定鉄心の外
周に軸方向に移動可能に設けられた補助固定鉄心と、コ
イルの励磁により可動鉄心が固定側の鉄心に吸着される
ときに吸着面に介在させた第１の弾性体と、この第１の
弾性体を介して可動鉄心が固定側の鉄心に吸引される時
に補助固定鉄心の可動鉄心への最終吸着位置へ進行停止
する際に補助固定鉄心の衝撃を和らげる第２の弾性体と
で構成したものであるから、吸引動作の衝撃を弾性体で
受けるため、消音効果があり、寿命を向上できる。ま
た、最終的に鉄心同士が面吸着するため、保持（吸着）
力の低下を防ぐことができ、高出力（低デューティ比）
タイプにおいても、励磁電流をダウンさせることによ
り、連続保持（通電）が可能となる。更に、ラッチング
タイプにおいても、無励磁保持力を低下することなく、
消音効果が得られる効果を奏するものである。As described above, the present invention provides a fixed iron core fixed to a key point of a frame, a movable iron core arranged to be movable in the axial direction and adsorbing to the above-mentioned fixed iron core, and an outer periphery of the fixed iron core. An auxiliary fixed iron core movably provided in the axial direction, a first elastic body interposed on the attracting surface when the movable iron core is attracted to the fixed core by excitation of the coil, and the first elastic body When the movable core is attracted to the fixed-side iron core via the second core, the second fixed body is configured to relieve the impact of the auxiliary fixed core when the auxiliary fixed core advances to the final suction position of the movable core. Because of this, since the impact of the suction operation is received by the elastic body, there is a silencing effect and the life can be improved. Also, since the cores are finally attracted to each other, they are held (adsorbed)
High output (low duty ratio)
Also in the type, continuous holding (energization) becomes possible by reducing the exciting current. Furthermore, even in the latching type, without lowering the non-excitation holding force,
This has an effect of obtaining a silencing effect.
【００３１】また、請求項２においては、第１の弾性体
を可動鉄心と固定鉄心との吸着面に配設し、第２の弾性
体を固定鉄心の可動鉄心への吸引方向とは反対方向に押
し付けるように配設し、可動鉄心の吸着最終位置で可動
鉄心と補助固定鉄心とを面吸着させたものであるから、
請求項１と同様に、吸引動作の衝撃を弾性体で受けるた
め、消音効果があり、寿命を向上できる。また、最終的
に鉄心同士が面吸着するため、保持（吸着）力の低下を
防ぐことができ、高出力（低デューティ比）タイプにお
いても、励磁電流をダウンさせることにより、連続保持
（通電）が可能となる。更に、ラッチングタイプにおい
ても、無励磁保持力を低下することなく、消音効果が得
られるものである。Further, in the present invention, the first elastic body is disposed on an attraction surface between the movable core and the fixed core, and the second elastic body is arranged in a direction opposite to a direction in which the fixed core is attracted to the movable core. The movable core and the auxiliary fixed core are surface-adsorbed at the final position where the movable core is adsorbed.
As in the first aspect, the impact of the suction operation is received by the elastic body, so that there is a noise reduction effect and the life can be improved. In addition, since the iron cores are finally attracted to each other, the holding (adsorption) force can be prevented from lowering. Even in a high output (low duty ratio) type, the holding current can be reduced by continuously reducing the excitation current. Becomes possible. Further, also in the latching type, a noise reduction effect can be obtained without reducing the non-excitation holding force.
【００３２】更に、請求項３においては、第１の弾性体
を可動鉄心と補助固定鉄心との吸着面に配設し、第２の
弾性体をエアーダンパーにて構成し、この第２の弾性体
により補助固定鉄心を可動鉄心側に付勢させ、可動鉄心
の吸着最終位置で可動鉄心と固定鉄心とを面吸着させた
ものであるから、可動鉄心の吸引動作の衝撃を第２の弾
性体及びエアーダンパーからなる第１の弾性体で受ける
ため、消音効果があると共に、可動鉄心と固定鉄心の吸
着面の寿命アップとなる。また、最終的に可動鉄心と固
定鉄心同士が面吸着するため、磁気抵抗の増加がなく、
保持（吸着）力の低下がないので、高出力（低デューテ
ィ比）タイプにおいて、励磁電流をダウンさせることに
より、連続保持（通電）が可能となる。更に、ラッチン
グタイプにおいても、無励磁保持力を低下することな
く、消音効果が得られる。また、ストロークエンドで可
動鉄心に制動がかかるので、被制御物への緩動作用が可
能となる。また、第１の弾性体のダンパー構造が、可動
鉄心の動作に直接影響しないので、外部出力への影響が
ないものである。Further, in the present invention, the first elastic member is disposed on the suction surface between the movable iron core and the auxiliary fixed iron core, and the second elastic member is constituted by an air damper. The auxiliary fixed core is urged toward the movable core side by the body, and the movable core and the fixed core are surface-adsorbed at the final position of suction of the movable core. Since it is received by the first elastic body composed of the air damper and the air damper, the sound absorbing effect is provided, and the life of the suction surfaces of the movable core and the fixed core is extended. In addition, since the movable core and the fixed core eventually attract each other, there is no increase in magnetic resistance.
Since the holding (adsorption) force does not decrease, continuous holding (energization) becomes possible by reducing the exciting current in the high output (low duty ratio) type. Further, also in the latching type, a silencing effect can be obtained without lowering the non-excitation holding force. Further, since the movable iron core is braked at the stroke end, it becomes possible to perform a gentle operation on the controlled object. Further, since the damper structure of the first elastic body does not directly affect the operation of the movable iron core, there is no influence on the external output.
【図１】本発明の実施例のソレノイドの断面図である。FIG. 1 is a sectional view of a solenoid according to an embodiment of the present invention.
【図２】同上の吸引力特性を示す図である。FIG. 2 is a diagram showing a suction force characteristic according to the first embodiment;
【図３】同上の実施例２のソレノイドの無励磁状態にお
ける断面図である。FIG. 3 is a cross-sectional view of the solenoid of Embodiment 2 in a non-excited state.
【図４】同上の可動鉄心と弾性体との衝突時における要
部断面図である。FIG. 4 is a cross-sectional view of a main part at the time of collision between the movable iron core and an elastic body according to the first embodiment.
【図５】同上の可動鉄心の保持状態を示す要部断面図で
ある。FIG. 5 is a cross-sectional view of a main part showing a holding state of the above movable iron core.
【図６】同上の吸引力特性を示す図である。FIG. 6 is a view showing a suction force characteristic of the above.
【図７】従来例のソレノイドの断面図である。FIG. 7 is a sectional view of a conventional solenoid.
【図８】他の従来例のソレノイドの断面図である。FIG. 8 is a sectional view of another conventional solenoid.
【図９】更に他の従来例のソレノイドの断面図である。FIG. 9 is a sectional view of still another conventional solenoid.
１ 可動鉄心 ２ 固定鉄心 ３ フレーム ４ コイル ６ 補助固定鉄心 ７ 弾性体 ８ 弾性体 ９ フランジ １０ 弾性体 １１ 弾性体 Reference Signs List 1 movable core 2 fixed core 3 frame 4 coil 6 auxiliary fixed core 7 elastic body 8 elastic body 9 flange 10 elastic body 11 elastic body
Claims (3)
と、軸方向に移動可能に配設され、上記固定鉄心と吸着
する可動鉄心と、固定鉄心の外周に軸方向に移動可能に
設けられた補助固定鉄心と、コイルの励磁により可動鉄
心が固定側の鉄心に吸着されるときに吸着面に介在させ
た第１の弾性体と、この第１の弾性体を介して可動鉄心
が固定側の鉄心に吸引される時に補助固定鉄心の可動鉄
心への最終吸着位置へ進行停止する際に補助固定鉄心の
衝撃を和らげる第２の弾性体とで構成したことを特徴と
するソレノイド。1. A fixed iron core fixed to a key point of a frame, a movable iron core arranged to be movable in the axial direction and adsorbed on the fixed iron core, and a movable iron core provided on an outer periphery of the fixed iron core to be movable in an axial direction. An auxiliary fixed iron core, a first elastic body interposed on the attracting surface when the movable core is attracted to the fixed core by excitation of the coil, and the movable core is fixed to the fixed side via the first elastic body. And a second elastic body that cushions the impact of the auxiliary fixed iron core when the auxiliary fixed iron core advances to the final suction position on the movable iron core when sucked by the iron core.
吸着面に配設し、第２の弾性体を固定鉄心の可動鉄心へ
の吸引方向とは反対方向に押し付けるように配設し、可
動鉄心の吸着最終位置で可動鉄心と補助固定鉄心とを面
吸着させたことを特徴とする請求項１記載のソレノイ
ド。2. A first elastic body is disposed on an attraction surface between a movable core and a fixed core, and a second elastic body is disposed so as to be pressed in a direction opposite to a direction in which the fixed core is attracted to the movable core. 2. The solenoid according to claim 1, wherein the movable core and the auxiliary fixed core are surface-adsorbed at the final position of the movable core.
との吸着面に配設し、第２の弾性体をエアーダンパーに
て構成し、この第２の弾性体により補助固定鉄心を可動
鉄心側に付勢させ、可動鉄心の吸着最終位置で可動鉄心
と固定鉄心とを面吸着させたことを特徴とする請求項１
記載のソレノイド。3. A first elastic body is disposed on an adsorbing surface between a movable core and an auxiliary fixed iron core, and a second elastic body is constituted by an air damper. The auxiliary fixed iron core is formed by the second elastic body. 2. The movable core is biased toward the movable core side, and the movable core and the fixed core are surface-sucked to each other at a final position where the movable core is attracted.
The solenoid as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34229092A JP3304147B2 (en) | 1992-12-22 | 1992-12-22 | solenoid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34229092A JP3304147B2 (en) | 1992-12-22 | 1992-12-22 | solenoid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06196317A JPH06196317A (en) | 1994-07-15 |
| JP3304147B2 true JP3304147B2 (en) | 2002-07-22 |
Family
ID=18352586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34229092A Expired - Fee Related JP3304147B2 (en) | 1992-12-22 | 1992-12-22 | solenoid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3304147B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100954525B1 (en) * | 2009-07-27 | 2010-04-22 | 파코스(주) | A small size solenoid device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354146A (en) * | 2013-08-07 | 2013-10-16 | 刘玮 | Structure of electromagnet |
| CN110428950A (en) * | 2019-08-29 | 2019-11-08 | 宁波精益飞达轴业有限公司 | A kind of electric-hydraulic proportion electromagnet |
-
1992
- 1992-12-22 JP JP34229092A patent/JP3304147B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100954525B1 (en) * | 2009-07-27 | 2010-04-22 | 파코스(주) | A small size solenoid device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06196317A (en) | 1994-07-15 |
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